Tensile deformation behavior of coarse-grained Ti-55 titanium alloy with different hydrogen additions

• 作者: Xi-Feng Li Fang-Fei Xu Lan Hu Fu-Hui Zhu Jun Chen
• 来源期刊: 稀有金属（英文版）
• 年，卷（期）: 2021,（8）
• 所属期刊栏目: ORIGINAL ARTICLES
• 页码范围: 2092-2098
• 页数: 7页
• 语种: 英文

摘要

The effect of hydrogen addition on the defor-mation behavior of coarse-grained Ti-55 alloys (～ 20 μtm)was studied by uniaxial tension tests at high temperature.The elongation of hydrogenated Ti-55 titanium alloy firstly increases and then decreases with hydrogen content increasing at 875 ℃.The highest elongation of 243.8％ is obtained in the hydrogenated alloy with 0.1 wt％ H,and the peak stress reaches a minimum value of 29.0 MPa in the hydrogenated alloy with 0.3 wt％ H.Compared with that of the unhydrogenated alloy,the elongation of the hydrogenated alloy with 0.1 wt％ H increases by 41.3％and its peak stress decreases by 40.6％ at 875 ℃.Hydro-gen addition can promote the transformation of β phase and the dislocation movement.Appropriate hydrogen content can evidently improve the deformation properties of coarse-grained Ti-55 titanium alloy.